A 60-year-old female patient with histological proven hemorrhagic ovarian cyst. (a) Axial T1WI reveals an inhomogeneous cystic mass with mostly isointensity in the right adnexal region. (b) On sagital T2WI, the cystic component of the tumor is homogenous hyperintensity, while the debris of hemorrhagic components are iso-hypo intensity, morphologically mimicking vegetations on the wall. (c) On fat-suppressed T2WI, the signal of mass is similar with (b). (d) The lesion shows weakly, marginally enhancement on contrast-enhanced fat-suppressed T1WI. (e) On DWI-MRI (b = 700 s/mm2), the lesion upwardly appears as the homogeneous hyperintensity and downwardly as inhomogenous isointensity. (f) ADC map demonstrates marked hyperintensity of the cystic components (T2 shine-through effect) and isointensity of solid components. The ADC values at the corresponding site are 2.59 ×10-3 (cyst) and 1.76 ×10-3 (solid), respectively.